The topic of this thesis is "Investigation of the impact of boron treatment on the resistance to abrasion wear of C15 steel". The paper consists of two parts, the first part is theoretical and the second part is experimental. In the first part of the paper, the basic mechanisms of wear are described, with the greatest importance being devoted to abrasive wear. In the next part, different cases of wear are described and the process of boronizing in different materials and the properties of boronized surfaces are explained in detail. In the second part of the paper, the analysis of the impact of boron treatment on the resistance to abrasive wear of C15 steel is described. The steel was boronized at a temperature of 870 ℃ for 4 and 6 hours. After that, samples made of C15 steel in the delivered condition and samples of borated steel at a temperature of 870 ℃ were consumed for 4 and 6 hours. Abrasion of the samples was performed on a Taber Abraser device, after which the samples were weighed to measure the mass loss after a given number of revolutions. The results obtained by measuring the loss of mass of borated steel for 4 and 6 hours were compared with the steel in the delivered state. Analysis of the results showed that both borated samples had a higher resistance to abrasive wear than the steel sample in the delivery state, with the sample borated for 6 h having the highest resistance.